The Honeywell L4081A1023 Multiple Aquastat Controller for High & Low Limit Applications is a high limit, low limit and or circulator controller used to regulate boiler water temperature in gas or oil fired hydronic heating systems.

The Honeywell L4081A1023 Multiple Aquastat Controller for High & Low Limit Applications is a high limit, low limit and or circulator controller used to regulate boiler water temperature in gas or oil fired hydronic heating systems.